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Steinmetz EL, Scherer A, Calvet C, Müller U. Orthologs of NOX5 and EC-SOD/SOD3: dNox and dSod3 Impact Egg Hardening Process and Egg Laying in Reproductive Function of Drosophila melanogaster. Int J Mol Sci 2024; 25:6138. [PMID: 38892326 PMCID: PMC11173305 DOI: 10.3390/ijms25116138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/21/2024] Open
Abstract
The occurrence of ovarian dysfunction is often due to the imbalance between the formation of reactive oxygen species (ROS) and the ineffectiveness of the antioxidative defense mechanisms. Primary sources of ROS are respiratory electron transfer and the activity of NADPH oxidases (NOX) while superoxide dismutases (SOD) are the main key regulators that control the levels of ROS and reactive nitrogen species intra- and extracellularly. Because of their central role SODs are the subject of research on human ovarian dysfunction but sample acquisition is low. The high degree of cellular and molecular similarity between Drosophila melanogaster ovaries and human ovaries provides this model organism with the best conditions for analyzing the role of ROS during ovarian function. In this study we clarify the localization of the ROS-producing enzyme dNox within the ovaries of Drosophila melanogaster and by a tissue-specific knockdown we show that dNox-derived ROS are involved in the chorion hardening process. Furthermore, we analyze the dSod3 localization and show that reduced activity of dSod3 impacts egg-laying behavior but not the chorion hardening process.
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Affiliation(s)
- Eva Louise Steinmetz
- Zoology & Physiology, ZHMB (Center of Human and Molecular Biology), Saarland University, Building B2.1, D-66123 Saarbrücken, Germany
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Chen Y, Yang J, Zhang L. The Impact of Follicular Fluid Oxidative Stress Levels on the Outcomes of Assisted Reproductive Therapy. Antioxidants (Basel) 2023; 12:2117. [PMID: 38136236 PMCID: PMC10740420 DOI: 10.3390/antiox12122117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Oocyte quality is a pivotal determinant of assisted reproductive outcomes. The quality of oocytes is intricately linked to their developmental microenvironment, particularly the levels of oxidative stress within the follicular fluid. Oxidative stress levels in follicular fluid may have a substantial influence on oocyte health, thereby impacting the outcomes of ART procedures. This review meticulously explores the intricate relationship between oxidative stress in follicular fluid and ART outcomes. Furthermore, it delves into strategies aimed at ameliorating the oxidative stress status of follicular fluid, with the overarching goal of enhancing the overall efficacy of ART. This research endeavors to establish a robust foundation and provide valuable guidance for clinical treatment approaches, particularly in the context of infertile women, including those of advanced maternal age.
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Affiliation(s)
| | | | - Ling Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan 430030, China; (Y.C.); (J.Y.)
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Zhao YK, Gao YN, Wang LC, Wang J, Wang GJ, Wu HL. Correlation between abnormal energy metabolism of ovarian granulosa cells and in vitro fertilization-embryo transfer outcomes in patients with polycystic ovary syndrome and obesity. J Ovarian Res 2023; 16:145. [PMID: 37480140 PMCID: PMC10362761 DOI: 10.1186/s13048-023-01204-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/16/2023] [Indexed: 07/23/2023] Open
Abstract
CONTEXT Granulosa cells (GCs) that surround oocytes in mammalian reproduction play an active role in oocyte differentiation through proliferation and energy production. AIMS This study aimed to investigate the characteristics of the energy metabolism of ovarian GCs and the influence of GCs on the early embryonic development in polycystic ovary syndrome (PCOS). METHODS The clinical characteristics and in vitro fertilization-embryo transfer treatment outcomes of 39 patients with PCOS and 68 patients with simple tubal factor infertility who underwent controlled ovarian hyperstimulation were analyzed and summarized. The mitochondrial function and glucose metabolism level of the GCs were determined, as well as the content of oxidative stress markers in the follicular fluid (FF) of patients with and without PCOS. KEY RESULTS When compared to the non-PCOS group, patients with PCOS had a significantly increased number of retrieved oocytes but a significantly decreased number of high-quality embryos, available embryos, and high-quality blastocyst formation (P < 0.05). Furthermore, the mitochondrial membrane potential, adenosine triphosphate level, and mitochondrial DNA (mtDNA) copy number decreased in the GCs, whereas the levels of reactive oxygen species increased (P < 0.01). The levels of malondialdehyde and 8-oxo-deoxyguanosine (8-OHdG) in the follicular fluid (FF) of the patients with PCOS were higher than those of the control group (P < 0.05), and superoxide dismutase was increased by compensation (P < 0.05). In the PCOS group, the expressions of GLUT1, LDHA, and PFKP were lower than those in the non-PCOS group, and glucose levels were higher. CONCLUSIONS The low oocyte competence of PCOS may be associated with mitochondrial dysfunction and abnormal glycolysis. IMPLICATIONS This research offers explanations for the possible connections influencing human ovarian folliculogenesis.
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Affiliation(s)
- Ya-Kun Zhao
- Department of Obstetrics and Gynecology, Affiliated Hospital of Hebei University, NO. 212 Yuhua East Road, Lianchi District, Baoding, 071000, Hebei, China
| | - Ya-Na Gao
- Department of Obstetrics and Gynecology, Affiliated Hospital of Hebei University, NO. 212 Yuhua East Road, Lianchi District, Baoding, 071000, Hebei, China
| | - Ling-Chao Wang
- 66350 Medical Company of PLA, Baoding, 071000, Hebei, China
| | - Jing Wang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Hebei University, NO. 212 Yuhua East Road, Lianchi District, Baoding, 071000, Hebei, China.
| | - Gai-Jing Wang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Hebei University, NO. 212 Yuhua East Road, Lianchi District, Baoding, 071000, Hebei, China
| | - Hong-Li Wu
- Department of Obstetrics and Gynecology, Affiliated Hospital of Hebei University, NO. 212 Yuhua East Road, Lianchi District, Baoding, 071000, Hebei, China
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The Key Role of Peroxisomes in Follicular Growth, Oocyte Maturation, Ovulation, and Steroid Biosynthesis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:7982344. [PMID: 35154572 PMCID: PMC8831076 DOI: 10.1155/2022/7982344] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/04/2022] [Indexed: 02/06/2023]
Abstract
The absence of peroxisomes can cause disease in the human reproductive system, including the ovaries. The available peroxisomal gene-knockout female mouse models, which exhibit pathological changes in the ovary and reduced fertility, are listed in this review. Our review article provides the first systematic presentation of peroxisomal regulation and its possible functions in the ovary. Our immunofluorescence results reveal that peroxisomes are present in all cell types in the ovary; however, peroxisomes exhibit different numerical abundances and strong heterogeneity in their protein composition among distinct ovarian cell types. The peroxisomal compartment is strongly altered during follicular development and during oocyte maturation, which suggests that peroxisomes play protective roles in oocytes against oxidative stress and lipotoxicity during ovulation and in the survival of oocytes before conception. In addition, the peroxisomal compartment is involved in steroid synthesis, and peroxisomal dysfunction leads to disorder in the sexual hormone production process. However, an understanding of the cellular and molecular mechanisms underlying these physiological and pathological processes is lacking. To date, no effective treatment for peroxisome-related disease has been developed, and only supportive methods are available. Thus, further investigation is needed to resolve peroxisome deficiency in the ovary and eventually promote female fertility.
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Effect of enzymatic pro-oxidant and antioxidant systems on bovine oocyte in vitro maturation. ANNALS OF ANIMAL SCIENCE 2021. [DOI: 10.2478/aoas-2021-0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The role of reactive oxygen species (ROS) during oocyte in vitro maturation (IVM) is still controversial. Although an increase in ROS production may cause deleterious effects in cells, these reactive species may also act as signaling molecules influencing different cell functions. The aim of this study was to examine the effect of varying endogenous ROS levels during IVM on the process of bovine oocyte maturation. To do so, different enzymatic antioxidant (catalase, or superoxide dismutase + catalase, or diphenyl iodonium) or pro-oxidant systems (xanthine + xanthine oxidase, or xanthine + xanthine oxidase + catalase) were added to the culture medium. ROS levels were determined by 2′,7′-dichlorodihydrofluorescein diacetate stain, nuclear maturation was evaluated by the presence of the metaphase II chromosome configuration at 22h of IVM and cleavage rate was recorded 48hs post- in vitro fertilization. ROS levels were only significantly increased (P<0.05) by the O2
.- generating system (xanthine + xanthine oxidase + catalase), but meiotic maturation rates were significantly lower (P<0.05) in all the evaluated systems compared with the control, except for the diphenyl iodonium group. However, this last group presented a significantly lower (P<0.05) cleavage rate in comparison to the control group. These results indicate that ROS would play an essential role during oocyte maturation, since its increase or decrease beyond a physiological level significantly reduced nuclear or cytoplasmic maturation rates in bovine oocytes.
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Ribeiro JC, Braga PC, Martins AD, Silva BM, Alves MG, Oliveira PF. Antioxidants Present in Reproductive Tract Fluids and Their Relevance for Fertility. Antioxidants (Basel) 2021; 10:antiox10091441. [PMID: 34573073 PMCID: PMC8466935 DOI: 10.3390/antiox10091441] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/27/2021] [Accepted: 09/05/2021] [Indexed: 12/14/2022] Open
Abstract
Nowadays, infertility is classified as a disease of the reproductive system. Although it does not compromise the life of the individual, it can have detrimental effects on the physiological and psychological health of the couple. Male fertility evaluation is mainly focused on the analysis of sperm parameters. However, the ejaculated fluid is also composed of seminal plasma, and the study of this fluid can provide crucial information to help in the assessment of male fertility status. Total antioxidant capacity of the seminal plasma has been positively correlated with the fertility of men. Moreover, evidence highlights to a similar importance as that of female reproductive tract fluid antioxidant capabilities and female fertility. Herein, we describe the functions of seminal plasma and female reproductive tract fluids, as well as their main antioxidant components and their relationships with fertility outcomes. Additionally, this review contains the most up to date information regarding the mechanisms of the interaction between the male and the female reproductive fluids and the importance of proper antioxidant capacity for fertilization.
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Affiliation(s)
- João C. Ribeiro
- Department of Anatomy, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (J.C.R.); (P.C.B.); (M.G.A.)
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Patrícia C. Braga
- Department of Anatomy, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (J.C.R.); (P.C.B.); (M.G.A.)
| | - Ana D. Martins
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Branca M. Silva
- CICS, Faculty of Health Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal;
| | - Marco G. Alves
- Department of Anatomy, Unit for Multidisciplinary Research in Biomedicine (UMIB), Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal; (J.C.R.); (P.C.B.); (M.G.A.)
| | - Pedro F. Oliveira
- QOPNA & LAQV, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
- Correspondence: ; Tel.: +351-234370718
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Faheem MS, Dessouki SM, Abdel-Rahman FES, Ghanem N. Physiological and molecular aspects of heat-treated cultured granulosa cells of Egyptian buffalo (Bubalus bubalis). Anim Reprod Sci 2020; 224:106665. [PMID: 33307488 DOI: 10.1016/j.anireprosci.2020.106665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022]
Abstract
The physiological and molecular responses of granulosa cells (GCs) from buffalo follicles were investigated when there were in vitro heat stress conditions imposed. The cultured GCs were heat-treated at 40.5 °C for 24, 48 or 72 h while GCs of the control group were not heat-treated (37 °C). There were no differences in viability between control and heat-treated groups. There was an upward trend in increase in E2 secretion as the duration of heat stress advanced, being greater (P ≤ 0.05) for the GCs on which heat stress was imposed for 72 as compared with 24 h. In contrast, P4 release was less (P ≤ 0.05) from GCs heat-treated for 48 h than those cultured for 24 h and GCs of the control group. The relative abundance of ATP5F1A and SOD2 mRNA transcripts was consistent throughout the period when there was imposing of heat stress to sustain mitochondrial function. The relative abundance of CPT2 transcript was less in heat-treated GCs than in GCs of the control group. There was a greater relative abundance of SREBP1 and TNF-α mRNA transcripts after 48 h of heat-treatment of GCs than GCs of the control group. In conclusion, the results from the current study indicate buffalo GCs cultured when there was imposing of heat stress maintained normal viability, steroidogenesis and transcriptional profile. The stability of antioxidant status and increased transcription of genes regulating cholesterol biosynthesis and stress resistance may be defense mechanisms of buffalo GCs against heat stress.
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Affiliation(s)
- Marwa S Faheem
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt; Cairo University Research Park (CURP) Faculty of Agriculture, Cairo University, Giza, Egypt.
| | - Sherif M Dessouki
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt; Cairo University Research Park (CURP) Faculty of Agriculture, Cairo University, Giza, Egypt
| | | | - Nasser Ghanem
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt; Cairo University Research Park (CURP) Faculty of Agriculture, Cairo University, Giza, Egypt
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Bhardwaj JK, Panchal H, Saraf P. Ameliorating Effects of Natural Antioxidant Compounds on Female Infertility: a Review. Reprod Sci 2020; 28:1227-1256. [PMID: 32935256 DOI: 10.1007/s43032-020-00312-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 09/03/2020] [Indexed: 12/17/2022]
Abstract
The prevalence of female infertility cases has been increasing at a frightening rate, affecting approximately 48 million women across the world. However, oxidative stress has been recognized as one of the main mediators of female infertility by causing various reproductive pathologies in females such as endometriosis, PCOS, preeclampsia, spontaneous abortion, and unexplained infertility. Nowadays, concerned women prefer dietary supplements with antioxidant properties over synthetic drugs as a natural way to lessen the oxidative stress and enhance their fertility. Therefore, the current review is an attempt to explore the efficacy of various natural antioxidant compounds including vitamins, carotenoids, and plant polyphenols and also of some medicinal plants in improving the fertility status of females. Our summarization of recent findings in the current article would pave the way toward the development of new possible antioxidant therapy to treat infertility in females. Natural antioxidant compounds found in fruits, vegetables, and other dietary sources, alone or in combination with other antioxidants, were found to be effective in ameliorating the oxidative stress-mediated infertility problems in both natural and assisted reproductive settings. Numerous medicinal plants showed promising results in averting the various reproductive disorders associated with female infertility, suggesting a plant-based herbal medicine to treat infertility. Although optimum levels of natural antioxidants have shown favorable results, however, their excessive intake may have adverse health impacts. Therefore, larger well-designed, dose-response studies in humans are further warranted to incorporate natural antioxidant compounds into the clinical management of female infertility.
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Affiliation(s)
- Jitender Kumar Bhardwaj
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India.
| | - Harish Panchal
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
| | - Priyanka Saraf
- Reproductive Physiology Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, Haryana, 136119, India
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Bertevello PS, Teixeira-Gomes AP, Labas V, Cordeiro L, Blache MC, Papillier P, Singina G, Uzbekov R, Maillard V, Uzbekova S. MALDI-TOF Mass Spectrometry Revealed Significant Lipid Variations in Follicular Fluid and Somatic Follicular Cells but Not in Enclosed Oocytes between the Large Dominant and Small Subordinate Follicles in Bovine Ovary. Int J Mol Sci 2020; 21:E6661. [PMID: 32932995 PMCID: PMC7554725 DOI: 10.3390/ijms21186661] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 12/13/2022] Open
Abstract
Lipid metabolism in ovarian follicular cells supports the preparation of an enclosed oocyte to ovulation. We aimed to compare lipid composition of a dominant large follicle (LF) and subordinated small follicles (SFs) within the same ovaries. Mass spectrometry imaging displayed the differences in the distribution of several lipid features between the different follicles. Comparison of lipid fingerprints between LF and SF by Matrix Assisted Laser Desorption/Ionisation Time-Of-Flight (MALDI-TOF) mass spectrometry revealed that in the oocytes, only 8 out of 468 detected lipids (1.7%) significantly changed their abundance (p < 0.05, fold change > 2). In contrast, follicular fluid (FF), granulosa, theca and cumulus cells demonstrated 55.5%, 14.9%, 5.3% and 9.8% of significantly varied features between LF and SF, respectively. In total, 25.2% of differential lipids were identified and indicated potential changes in membrane and signaling lipids. Tremendous changes in FF lipid composition were likely due to the stage specific secretions from somatic follicular cells that was in line with the differences observed from FF extracellular vesicles and gene expression of candidate genes in granulosa and theca cells between LF and SF. In addition, lipid storage in granulosa and theca cells varied in relation to follicular size and atresia. Differences in follicular cells lipid profiles between LF and SF may probably reflect follicle atresia degree and/or accumulation of appropriate lipids for post-ovulation processes as formation of corpus luteum. In contrast, the enclosed oocyte seems to be protected during final follicular growth, likely due in part to significant lipid transformations in surrounding cumulus cells. Therefore, the enclosed oocyte could likely keep lipid building blocks and energy resources to support further maturation and early embryo development.
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Affiliation(s)
- Priscila Silvana Bertevello
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
| | - Ana-Paula Teixeira-Gomes
- INRAE, Université de Tours, ISP, 37380 Nouzilly, France;
- CHU de Tours, INRAE, Université de Tours, PRC, CIRE, 37380 Nouzilly, France
| | - Valerie Labas
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
- CHU de Tours, INRAE, Université de Tours, PRC, CIRE, 37380 Nouzilly, France
| | - Luiz Cordeiro
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
| | - Marie-Claire Blache
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
| | - Pascal Papillier
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
| | - Galina Singina
- L.K. Ernst Institute of Animal Husbandry, Dubrovitzy 60, Podolsk, 142132 Moscow, Russia;
| | - Rustem Uzbekov
- Laboratoire Biologie Cellulaire et Microscopie Électronique, Faculté de Médecine, Université de Tours, 10, bd Tonnellé, 37032 Tours, France;
| | - Virginie Maillard
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
- Laboratoire Biologie Cellulaire et Microscopie Électronique, Faculté de Médecine, Université de Tours, 10, bd Tonnellé, 37032 Tours, France;
| | - Svetlana Uzbekova
- CNRS, IFCE, INRAE, Université de Tours, PRC, 37380 Nouzilly, France; (P.S.B.); (V.L.); (L.C.); (M.-C.B.); (P.P.); (V.M.)
- CHU de Tours, INRAE, Université de Tours, PRC, CIRE, 37380 Nouzilly, France
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Yi Q, Meng C, Cai LB, Cui YG, Liu JY, Meng Y. Peroxiredoxin 4, a new oxidative stress marker in follicular fluid, may predict in vitro fertilization and embryo transfer outcomes. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1049. [PMID: 33145268 PMCID: PMC7575942 DOI: 10.21037/atm-20-397] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Peroxiredoxin 4 (Prdx4), a member of the Prdx family, can catalyze the reduction of reactive oxygen species. This study aims to explore whether Prdx4 can serve as an effective marker in follicular fluid (FF) for predicting in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) cycle outcomes. Methods In this prospective study, all participants were recruited from the center of clinical reproductive medicine from 2017 September to 2018 December. Women with tubal or male factor infertility undergoing their first IVF/ICSI cycle were recruited (n=138). FF samples from each patient were collected on the day of oocyte retrieval. Prdx4 concentrations were measured, and the correlation between Prdx4 levels and IVF outcomes was analyzed. Results The results showed that pregnant women had higher levels of Prdx4 than nonpregnant women. Prdx4 was positively correlated with the oocyte fertilization rate (r =0.334; P=0.011) and good quality embryo rate (r =0.326; P=0.013). Furthermore, we found that the clinical pregnancy rate was positively correlated with Prdx4 levels in a concentration-dependent manner in the Prdx4 quartiles (<13.38, 13.83–16.93, 16.93–22.93, >22.93 ng/mL). The fertilization rates, clinical pregnancy rates and live pregnancy rates were all significantly higher in the highest Prdx4 quartile group than in the lowest quartile. Moreover, the results indicated that Prdx4 had an area under the receiver operating characteristic curve (AUC) of 0.754, corresponding to an optimal cutoff point of 22.30 ng/mL. Conclusions Our results provide evidence that higher expression of antioxidants, such as Prdx4, in the FF of IVF patients tends to indicate a higher likelihood of pregnancy through an oocyte quality mechanism.
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Affiliation(s)
- Qian Yi
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Chao Meng
- Department of Critical Care Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Ling-Bo Cai
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yu-Gui Cui
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Jia-Yin Liu
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Yan Meng
- The State Key Laboratory of Reproductive Medicine, Clinical Center of Reproductive Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
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PI3K inhibitor reduces in vitro maturation and developmental competence of porcine oocytes. Theriogenology 2020; 157:432-439. [PMID: 32877843 DOI: 10.1016/j.theriogenology.2020.08.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/28/2020] [Accepted: 08/13/2020] [Indexed: 01/10/2023]
Abstract
The phosphatidylinositol -3- kinase (PI3K) signaling pathway is critical for the cell proliferation, apoptosis, metabolism, DNA repair and protein synthesis. Significant effort has focused on elucidating the relationship between PI3K signaling pathway and other nuclear signal transducers; However, little is known about the connection between PI3K signaling pathway and porcine oocyte meiotic maturation. In this study, we investigated the function of PI3K signaling pathway in porcine oocytes. PI3K signaling pathway was important during oocyte maturation. Furthermore, the PI3K signaling pathway inhibitor LY-294002 blocked porcine oocyte maturation, reducing the percentage of oocytes that first polar body (PBI) extrusion. LY-294002 also decreased the expression of oocyte proliferation-related gene PCNA and reduced the mRNA and protein levels of PI3K. What's more, LY-294002 also decreased other maturation-related genes that are predominantly expressed duringporcine oocyte maturation, including bone morphogenetic protein 15 (BPM15), growth differentiation factor 9 (GDF9), cell division cycle protein 2 (CDC2), phosphatase and tensin homolog (PTEN), CyclinB1, MOS and Akt. LY-294002 treatment decreased the developmental potential of blastocysts following parthenogenetic activation, increased the level of cell apoptosis and reduced the level of cell-cycle. This study revealed that inhibiting the PI3K signaling pathway could reduce in vitro maturation and developmental competence of porcine oocytes, probably by reducing cell cycle arrest and proliferation, promoting the oocyte apoptosis, and altering the expression of other maternal genes.
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12
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Fernández-Rojas B, Vázquez-Cervantes GI, Pedraza-Chaverri J, Gutiérrez-Venegas G. Lipoteichoic acid reduces antioxidant enzymes in H9c2 cells. Toxicol Rep 2019; 7:101-108. [PMID: 31921600 PMCID: PMC6948251 DOI: 10.1016/j.toxrep.2019.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 12/17/2019] [Accepted: 12/29/2019] [Indexed: 12/30/2022] Open
Abstract
Infective endocarditis (IE) is an illness where the heart is invaded by bacteria, like Streptococcal and Staphylococcal species that contain lipoteichoic acid (LTA) related to an essential role in this disease. This study is the first in evaluating antioxidant enzyme levels in embryonic cardiomyocyte cell line (H9c2) induced by LTA from Streptococcus sanguinis. LTA increased reactive oxygen species (ROS) and reduced the levels of the antioxidant enzymes glutathione peroxidase, superoxide dismutase (SOD)-1 and catalase (CAT) but did not affect glutathione content. At the highest LTA concentration (15 μg/ml), SOD-1 and CAT levels did not change, and this effect was related to the induction of mRNA levels of Nrf2 induced by LTA. These results suggest that low antioxidant enzyme levels and ROS production could be related to IE.
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Key Words
- AKT, protein kinase B
- Antioxidant enzymes
- CAT, catalase
- Carboxy-H2DCFDA, 6-carboxy-2´,7´ dichlorodihydrofluorescein diacetate
- DHE, dihydroethidium
- ERK, extracellular signal-regulated kinases
- FDA, fluorescein diacetate
- GPx-1, glutathione peroxidase-1
- GSH, glutathione
- H2O2, hydrogen peroxide
- IE, infective endocarditis
- Infective endocarditis
- JNK, c-jun N-terminal kinases
- LTA, lipoteichoic acid
- Lipoteichoic acid
- MAPK, mitogen-activated protein kinase
- MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- NO, nitric oxide
- NOS, nitric oxide synthase
- Nrf2, nuclear factor (erythroid-derived 2)-like 2
- O2•¯, superoxide radical
- OH•, hydroxyl radical
- ONOO¯, peroxynitrite anion
- Oxidative stress
- RNS, reactive nitrogen species
- ROS production
- ROS, reactive oxygen species
- SOD-1, superoxide dismutase-1
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Affiliation(s)
- Berenice Fernández-Rojas
- Laboratorio de Bioquímica de la División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Ciudad de México, México
| | - Gustavo I. Vázquez-Cervantes
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Circuito interior s/n, Ciudad Universitaria, 04510, Ciudad de México, México
| | - José Pedraza-Chaverri
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Circuito interior s/n, Ciudad Universitaria, 04510, Ciudad de México, México
| | - Gloria Gutiérrez-Venegas
- Laboratorio de Bioquímica de la División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Ciudad de México, México
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Annes K, Müller DB, Vilela JAP, Valente RS, Caetano DP, Cibin FWS, Milazzotto MP, Mesquita FS, Belaz KRA, Eberlin MN, Sudano MJ. Influence of follicle size on bovine oocyte lipid composition, follicular metabolic and stress markers, embryo development and blastocyst lipid content. Reprod Fertil Dev 2019; 31:462-472. [PMID: 30282571 DOI: 10.1071/rd18109] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 08/17/2018] [Indexed: 12/23/2022] Open
Abstract
This study assessed the lipid composition of oocytes from different follicle sizes and compared the expression of lipid-related genes and follicular fluid (FF) molecules between groups. We also investigated the functional consequences of differences on embryo development and blastocyst lipid deposits. Oocytes and FF were recovered from different follicle sizes. Oocytes from small (≤5mm) and large (≥6mm) bovine follicles were used to produce Day 7 expanded blastocysts (Day7Ex) and blastocysts that only became expanded at Day 8 (Day8Ex) after insemination. Oocytes from >8mm follicles had the highest lipid content. Few oocyte phospholipid variations were identified between groups. Very long chain fatty acid elongase 6 (ELOVL6) mRNA abundance was reduced in larger follicle-derived oocytes compared with the ≤2mm group. Increased levels of glucose, reactive oxygen species, glutathione and superoxide dismutase activity were also identified in FF from larger follicles. Large follicle-derived embryo development and lipid content of Day7Ex were greater than those derived from small follicles. Day8Ex had greater lipid deposition than Day7Ex. Oocytes and blastocysts exhibited follicle size-specific lipids. Large-follicle oocytes had increased lipid content and became Day7Ex with greater lipid deposition whereas delayed blastocoel expansion associated with a prolonged period of culture determined the lipid accumulation of Day8Ex. The FF microenvironment of large follicles seems to favour embryo development.
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Affiliation(s)
- Kelly Annes
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Diego B Müller
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Jorge A P Vilela
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Roniele S Valente
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Diana P Caetano
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Francielli W S Cibin
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Marcella P Milazzotto
- Centre of Natural and Human Sciences, Federal University of ABC, Av. dos Estados, 5001, 09210-580, Santo André, São Paulo, Brazil
| | - Fernando S Mesquita
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
| | - Katia R A Belaz
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas, UNICAMP PO Box 6154, 13083-970, Distrito de Barão Geraldo, Campinas, São Paulo, Brazil
| | - Marcos N Eberlin
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas, UNICAMP PO Box 6154, 13083-970, Distrito de Barão Geraldo, Campinas, São Paulo, Brazil
| | - Mateus J Sudano
- School of Veterinary Medicine, Federal University of Pampa, BR 472 - KM 592, PO Box 118, 97501-970, Uruguaiana, RS, Brazil
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14
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Hou S, Hao Q, Zhu Z, Xu D, Liu W, Lyu L, Li P. Unraveling proteome changes and potential regulatory proteins of bovine follicular Granulosa cells by mass spectrometry and multi-omics analysis. Proteome Sci 2019; 17:4. [PMID: 31673248 PMCID: PMC6815045 DOI: 10.1186/s12953-019-0152-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 09/16/2019] [Indexed: 12/14/2022] Open
Abstract
Background In previous study, we performed next-gene sequencing to investigate the differentially expressed transcripts of bovine follicular granulosa cells (GCs) at dominant follicle (DF) and subordinate follicle (SF) stages during first follicular wave. Present study is designed to further identify the key regulatory proteins and signaling pathways associated with follicular development using label-free liquid chromatography-tandem mass spectrometry (LC-MS/MS) and multi-omics data analysis approach. Methods DF and SF from three cattle were collected by daily ultrasonography. The GCs were isolated from each follicle, total proteins were digested by trypsin, and then proteomic analyzed via LC-MS/MS, respectively. Proteins identified were retrieved from Uniprot-COW fasta database, and differentially expressed proteins were used to functional enrichment and KEGG pathway analysis. Proteome data and transcriptome data obtained from previous studies were integrated. Results Total 3409 proteins were identified from 30,321 peptides (FDR ≤0.01) obtained from LC-MS/MS analysis and 259 of them were found to be differentially expressed at different stage of follicular development (fold Change > 2, P < 0.05). KEGG pathway analysis of proteome data revealed important signaling pathways associated with follicular development, multi-omics data analysis results showed 13 proteins were identified as being differentially expressed in DF versus SF. Conclusions This study represents the first investigation of transcriptome and proteome of bovine follicles and offers essential information for future investigation of DF and SF in cattle. It also will enrich the theory of animal follicular development. Electronic supplementary material The online version of this article (10.1186/s12953-019-0152-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shuning Hou
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Qingling Hao
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Zhiwei Zhu
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Dongmei Xu
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Wenzhong Liu
- 2College of Animal Science and Technology, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Lihua Lyu
- 2College of Animal Science and Technology, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Pengfei Li
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
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15
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Hao Q, Zhu Z, Xu D, Liu W, Lyu L, Li P. Proteomic characterization of bovine granulosa cells in dominant and subordinate follicles. Hereditas 2019; 156:21. [PMID: 31293364 PMCID: PMC6593542 DOI: 10.1186/s41065-019-0097-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/14/2019] [Indexed: 01/06/2023] Open
Abstract
Background Characterization of molecular factors regulating ovarian follicular development is critical to understanding its functional mechanism of controlling the estrous cycle, determining oocyte competency, and regulating ovulation. In previous studies, we performed next-gene sequencing to investigate the differentially expressed transcripts of bovine follicular granulosa cells (GCs) at the dominant follicle (DF) and subordinate follicle (SF) stages during the first follicular wave. This study aims to investigate the proteomic characterization of GCs of DF and SF in the bovine estrous cycle. Results In total, 3409 proteins were identified from 30,321 peptides obtained from liquid chromatograph-mass spectrometer analysis. Two hundred fifty-nine of these proteins were found to be expressed differently in DF and SF. Out of 259, a total of 26 proteins were upregulated (fold change≥2) and 233 proteins were downregulated (fold change≤0.5) in DF. Gene Ontology (GO) analysis of proteome data revealed the biological process, cellular component and molecular function of expressed proteins in DF and SF, while the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed important signaling pathways associated with follicular development such as the PI3K-Akt, estrogen, and insulin signaling pathways. Immunoblotting results of OGN, ROR2, and HSPB1 confirmed the accuracy of the data. Bioinformatics analysis showed that 13 proteins may be linked to follicular development. Conclusions Findings from this study will provide useful information for exploring follicular development and function. Electronic supplementary material The online version of this article (10.1186/s41065-019-0097-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qingling Hao
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Zhiwei Zhu
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Dongmei Xu
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Wenzhong Liu
- 2College of Animal Science and Technology, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Lihua Lyu
- 2College of Animal Science and Technology, Shanxi Agricultural University, Taigu, 030801 Shanxi China
| | - Pengfei Li
- 1College of Life Science, Shanxi Agricultural University, Taigu, 030801 Shanxi China
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16
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Thaker R, Mishra V, Gor M, Agarwal R, Sheth H, Kapadia P, Kumar S. The role of stimulation protocol, number of oocytes retrieved with respect to follicular fluid oxidative stress and IVF outcome. HUM FERTIL 2019; 23:23-31. [PMID: 30621481 DOI: 10.1080/14647273.2018.1551630] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The study was conducted on a population of 203 women attending the IVF clinic, Ahmedabad, India, to explore the role of stimulation protocol and the number of oocytes retrieved on oxidative stress in follicular fluid and IVF outcome. Follicular fluid was collected during ovum pick-up to determine the oxidative stress markers: superoxide dismutase (SOD), malondialdehyde (MDA), glutathione (GSH), total thiols (TT), l-ascorbic acid (AA), total protein, glutathione S-transferase (GST) and glutathione reductase (GRD). The average number of oocytes retrieved was significantly higher in the women receiving a long GnRH agonist protocol compared to GnRH antagonist protocol while the percentage of women with positive IVF outcome was lower in the long agonist protocol. The level of total thiols was significantly lower in the group of women administered a short agonist protocol. The proportion of ETs carried out and positive IVF outcome were higher following retrieval of an intermediate number of oocytes (6-10 oocytes) compared to a lower (0-5 oocytes) and higher (>10 oocytes) number. Mean glutathione reductase (GRD) activity in follicular fluid was significantly elevated in the intermediate (6-10) and higher (>10) oocyte retrieval groups compared to the lower oocyte retrieval group. Positive IVF outcomes were highest when oocyte retrieval was in the range of 6-10 oocytes, and the level of MDA was lower (1.76 ± 0.13 nmol/ml) as compared to 0-5 and >10 oocytes retrieved groups.
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Affiliation(s)
- Riddhi Thaker
- Division of Reproductive and Cytotoxicology, ICMR - National Institute of Occupational Health, Ahmedabad, India
| | - Vineet Mishra
- IVF Centre, IKDRC, Civil Hospital Campus, Ahmedabad, India
| | - Mansi Gor
- Division of Reproductive and Cytotoxicology, ICMR - National Institute of Occupational Health, Ahmedabad, India
| | - Rohina Agarwal
- IVF Centre, IKDRC, Civil Hospital Campus, Ahmedabad, India
| | - Hardik Sheth
- IVF Centre, IKDRC, Civil Hospital Campus, Ahmedabad, India
| | - Prakruti Kapadia
- Division of Reproductive and Cytotoxicology, ICMR - National Institute of Occupational Health, Ahmedabad, India
| | - Sunil Kumar
- Division of Reproductive and Cytotoxicology, ICMR - National Institute of Occupational Health, Ahmedabad, India
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17
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CoQ10 Supplementation in Patients Undergoing IVF-ET: The Relationship with Follicular Fluid Content and Oocyte Maturity. Antioxidants (Basel) 2018; 7:antiox7100141. [PMID: 30322142 PMCID: PMC6210096 DOI: 10.3390/antiox7100141] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/18/2018] [Accepted: 10/08/2018] [Indexed: 01/04/2023] Open
Abstract
Background: The target of the reduced fecundity with aging is the oocyte. The follicular fluid and its components are strongly linked with the environment of the maturing oocyte. The aim of the present study was to evaluate CoQ10 bioavailability in follicular fluids after oral supplementation and its possible implication in oocyte maturation. Methods: Fifteen female partners of infertile couples, aged 31–46, undergoing IVF-ET and taking 200 mg/day oral CoQ10 were compared to unsupplemented patients. CoQ10 content, its oxidative status and total antioxidant capacity were evaluated also in relation to oocyte maturation indexes. Results: CoQ10 supplementation produced a significant increase in follicular content and a significant improvement of its oxidative status. Follicular fluid total antioxidant capacity highlighted a significant decrease in patients supplemented with CoQ10, specially in women >35 years. CoQ10 supplementation was associated with a significant decrease in total antioxidant capacity of fluid from follicles containing mature oocyte, moreover CoQ10 oxidative status was also significantly reduced but in follicles containing immature oocyte. Conclusions: Our observation leads to the hypothesis that the oral supplementation of CoQ10 may improve follicular fluid oxidative metabolism and oocyte quality, specially in over 35-year-old women.
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18
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Torres V, Hamdi M, Millán de la Blanca MG, Urrego R, Echeverri J, López-Herrera A, Rizos D, Gutiérrez-Adán A, Sánchez-Calabuig MJ. Resveratrol-cyclodextrin complex affects the expression of genes associated with lipid metabolism in bovine in vitro produced embryos. Reprod Domest Anim 2018; 53:850-858. [DOI: 10.1111/rda.13175] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 02/27/2018] [Indexed: 12/21/2022]
Affiliation(s)
- V Torres
- Grupo BIOGEM; Universidad Nacional de Colombia Sede Medellín; Medellín Colombia
| | - M Hamdi
- Reproduction Department; INIA; Madrid Spain
| | | | - R Urrego
- Facultad de Medicina Veterinaria y Zootecnia; Grupo INCA-CES, CES; Medellín Colombia
| | - J Echeverri
- Grupo BIOGEM; Universidad Nacional de Colombia Sede Medellín; Medellín Colombia
| | - A López-Herrera
- Grupo BIOGEM; Universidad Nacional de Colombia Sede Medellín; Medellín Colombia
| | - D Rizos
- Reproduction Department; INIA; Madrid Spain
| | | | - MJ Sánchez-Calabuig
- Reproduction Department; INIA; Madrid Spain
- Departamento de Medicina y Cirugía Animal; Facultad de Veterinaria; UCM; Madrid Spain
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19
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Griess B, Tom E, Domann F, Teoh-Fitzgerald M. Extracellular superoxide dismutase and its role in cancer. Free Radic Biol Med 2017; 112:464-479. [PMID: 28842347 PMCID: PMC5685559 DOI: 10.1016/j.freeradbiomed.2017.08.013] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 12/19/2022]
Abstract
Reactive oxygen species (ROS) are increasingly recognized as critical determinants of cellular signaling and a strict balance of ROS levels must be maintained to ensure proper cellular function and survival. Notably, ROS is increased in cancer cells. The superoxide dismutase family plays an essential physiological role in mitigating deleterious effects of ROS. Due to the compartmentalization of ROS signaling, EcSOD, the only superoxide dismutase in the extracellular space, has unique characteristics and functions in cellular signal transduction. In comparison to the other two intracellular SODs, EcSOD is a relatively new comer in terms of its tumor suppressive role in cancer and the mechanisms involved are less well understood. Nevertheless, the degree of differential expression of this extracellular antioxidant in cancer versus normal cells/tissues is more pronounced and prevalent than the other SODs. A significant association of low EcSOD expression with reduced cancer patient survival further suggests that loss of extracellular redox regulation promotes a conducive microenvironment that favors cancer progression. The vast array of mechanisms reported in mediating deregulation of EcSOD expression, function, and cellular distribution also supports that loss of this extracellular antioxidant provides a selective advantage to cancer cells. Moreover, overexpression of EcSOD inhibits tumor growth and metastasis, indicating a role as a tumor suppressor. This review focuses on the current understanding of the mechanisms of deregulation and tumor suppressive function of EcSOD in cancer.
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Affiliation(s)
- Brandon Griess
- Department of Biochemistry and Molecular Biology, Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Eric Tom
- Department of Biochemistry and Molecular Biology, Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Frederick Domann
- Free Radical and Radiation Biology Program, Radiation Oncology, University of Iowa, Iowa, IA 52242, United States
| | - Melissa Teoh-Fitzgerald
- Department of Biochemistry and Molecular Biology, Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States.
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20
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Wang S, He G, Chen M, Zuo T, Xu W, Liu X. The Role of Antioxidant Enzymes in the Ovaries. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4371714. [PMID: 29147461 PMCID: PMC5632900 DOI: 10.1155/2017/4371714] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/19/2017] [Indexed: 01/21/2023]
Abstract
Proper physiological function of the ovaries is very important for the entire female reproductive system and overall health. Reactive oxygen species (ROS) are generated as by-products during ovarian physiological metabolism, and antioxidants are indicated as factors that can maintain the balance between ROS production and clearance. A disturbance in this balance can induce pathological consequences in oocyte maturation, ovulation, fertilization, implantation, and embryo development, which can ultimately influence pregnancy outcomes. However, our understanding of the molecular and cellular mechanisms underlying these physiological and pathological processes is lacking. This article presents up-to-date findings regarding the effects of antioxidants on the ovaries. An abundance of evidence has confirmed the various significant roles of these antioxidants in the ovaries. Some animal models are discussed in this review to demonstrate the harmful consequences that result from mutation or depletion of antioxidant genes or genes related to antioxidant synthesis. Disruption of antioxidant systems may lead to pathological consequences in women. Antioxidant supplementation is indicated as a possible strategy for treating reproductive disease and infertility by controlling oxidative stress (OS). To confirm this, further investigations are required and more antioxidant therapy in humans has to been performed.
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Affiliation(s)
- Shan Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Joint Laboratory of Reproductive Medicine, Sichuan University-The Chinese University of Hong Kong (SCU-CUHK), West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Guolin He
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Meng Chen
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Tao Zuo
- Joint Laboratory of Reproductive Medicine, Sichuan University-The Chinese University of Hong Kong (SCU-CUHK), West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Wenming Xu
- Joint Laboratory of Reproductive Medicine, Sichuan University-The Chinese University of Hong Kong (SCU-CUHK), West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Xinghui Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
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Andrade GM, da Silveira JC, Perrini C, Del Collado M, Gebremedhn S, Tesfaye D, Meirelles FV, Perecin F. The role of the PI3K-Akt signaling pathway in the developmental competence of bovine oocytes. PLoS One 2017; 12:e0185045. [PMID: 28922408 PMCID: PMC5602670 DOI: 10.1371/journal.pone.0185045] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 09/04/2017] [Indexed: 01/15/2023] Open
Abstract
The ovarian follicle encloses oocytes in a microenvironment throughout their growth and acquisition of competence. Evidence suggests a dynamic interplay among follicular cells and oocytes, since they are constantly exchanging “messages”. We dissected bovine ovarian follicles and recovered follicular cells (FCs—granulosa and cumulus cells) and cumulus-oocyte complexes (COCs) to investigate whether the PI3K-Akt signaling pathway impacted oocyte quality. Following follicle rupture, COCs were individually selected for in vitro cultures to track the follicular cells based on oocyte competence to reach the blastocyst stage after parthenogenetic activation. Levels of PI3K-Akt signaling pathway components in FCs correlated with oocyte competence. This pathway is upregulated in FCs from follicles with high-quality oocytes that are able to reach the blastocyst stage, as indicated by decreased levels of PTEN and increased levels of the PTEN regulators bta-miR-494 and bta-miR-20a. Using PI3K-Akt responsive genes, we showed decreased FOXO3a levels and BAX levels in lower quality groups, indicating changes in cell cycle progression, oxidative response and apoptosis. Based on these results, the measurement of levels of PI3K-Akt pathway components in FCs from ovarian follicles carrying oocytes with distinct developmental competences is a useful tool to identify putative molecular pathways involved in the acquisition of oocyte competence.
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Affiliation(s)
- Gabriella Mamede Andrade
- Veterinary Medicine Department, Faculty of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, São Paulo, Brazil
| | - Juliano Coelho da Silveira
- Veterinary Medicine Department, Faculty of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, São Paulo, Brazil
| | - Claudia Perrini
- Large Animal Hospital, Reproduction Unit, Università degli Studi di Milano, Lodi, Italy
| | - Maite Del Collado
- Veterinary Medicine Department, Faculty of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, São Paulo, Brazil
| | - Samuel Gebremedhn
- Institute for Animal Sciences (ITW), University of Bonn, Bonn, Germany
| | - Dawit Tesfaye
- Institute for Animal Sciences (ITW), University of Bonn, Bonn, Germany
| | - Flávio Vieira Meirelles
- Veterinary Medicine Department, Faculty of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, São Paulo, Brazil
| | - Felipe Perecin
- Veterinary Medicine Department, Faculty of Animal Sciences and Food Engineering, University of Sao Paulo, Pirassununga, São Paulo, Brazil
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Nivet A, Vigneault C, Blondin P, Sirard M. Influence of luteinizing hormone support on granulosa cells transcriptome in cattle. Anim Sci J 2017; 89:21-30. [DOI: 10.1111/asj.12856] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 05/09/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Anne‐Laure Nivet
- Centre de recherche en reproduction développement et sante intergénérationnelle Faculté des sciences de l'agriculture et de l'alimentation Département des sciences animales INAF Université Laval QuébecQC Canada
| | | | | | - Marc‐Andre Sirard
- Centre de recherche en reproduction développement et sante intergénérationnelle Faculté des sciences de l'agriculture et de l'alimentation Département des sciences animales INAF Université Laval QuébecQC Canada
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Roldán-Olarte M, Maillo V, Sánchez-Calabuig MJ, Beltrán-Breña P, Rizos D, Gutiérrez-Adán A. Effect of urokinase type plasminogen activator on in vitro bovine oocyte maturation. Reproduction 2017; 154:231-240. [PMID: 28667127 DOI: 10.1530/rep-17-0204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 05/23/2017] [Accepted: 06/30/2017] [Indexed: 12/27/2022]
Abstract
This study examines the impacts of the urokinase-type plasminogen activator (uPA) on the in vitro maturation (IVM) of bovine oocytes. Cumulus-oocyte complexes in IVM medium were treated with uPA, amiloride (an uPA inhibitor), dimethyl sulfoxide (DMSO) or left untreated (control group). After 24 h of IVM, oocytes were recovered for testing or were in vitro fertilized and cultured to the blastocyst stage. The factors examined in all groups were: (i) oocyte nuclear maturation (Hoëscht staining); (ii) oocyte cytoplasmic maturation (cortical granules, CGs, distribution assessed by LCA-FITC); (iii) oocyte and cumulus cell (CC) gene expression (RT-qPCR); and (iv) embryo development (cleavage rate and blastocyst yield). Oocytes subjected to uPA treatment showed rates of nuclear maturation and CG distribution patterns similar to controls (P > 0.05), whereas lower rates of oocyte maturation were recorded in the amiloride group (P < 0.05). Both in oocytes and CC, treatment with uPA did not affect the transcription of genes related to apoptosis, cell junctions, cell cycle or serpin protease inhibitors. In contrast, amiloride altered the expression of genes associated with cell junctions, cell cycle, oxidative stress and CC serpins. No differences were observed between the control and uPA group in cleavage rate or in blastocyst yield recorded on Days 7, 8 or 9 post-insemination. However, amiloride led to drastically reduced cleavage rate (28.5% vs 83.2%) and Day 9 embryo production (6.0% vs 21.0%) over the rates recorded for DMSO. These results indicate that the proteolytic activity of uPA is needed for successful oocyte maturation in bovine.
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Affiliation(s)
- Mariela Roldán-Olarte
- Department Reproducción AnimalINIA, Madrid, Spain .,Instituto Superior de Investigaciones Biológicas (INSIBIO)CONICET-Universidad Nacional de Tucumán (UNT), San Miguel de Tucumán, Argentina
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Rodrigues-Cunha MC, Mesquita LG, Bressan F, Collado MD, Balieiro JCC, Schwarz KRL, de Castro FC, Watanabe OY, Watanabe YF, de Alencar Coelho L, Leal CLV. Effects of melatonin during IVM in defined medium on oocyte meiosis, oxidative stress, and subsequent embryo development. Theriogenology 2016; 86:1685-94. [PMID: 27471183 DOI: 10.1016/j.theriogenology.2016.05.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/02/2016] [Accepted: 05/20/2016] [Indexed: 01/25/2023]
Abstract
Melatonin may have beneficial effects when used in oocyte maturation and embryo development culture. The effect of melatonin during IVM on meiosis resumption and progression in bovine oocytes and on expression of antioxidant enzymes, nuclear fragmentation and free radicals, as well as on embryo development were assessed. Cumulus-oocyte complexes were matured in vitro with melatonin (10(-9) and 10(-6) M), FSH (positive control), or without hormones (negative control) in defined medium. Maturation rates were evaluated at 6, 12, 18, and 24 hours. Transcripts for antioxidant enzymes (CuZnSOD, MnSOD, and glutathione peroxidase 4 (GPX4)) in oocytes and cumulus cells, nuclear fragmentation in cumulus cells (TUNEL) and reactive oxygen species levels in oocytes (carboxy-H2 difluorofluorescein diacetate) were determined at 24 hours IVM. Effect of treatments on embryo development was determined after in vitro fertilization and culture. At 12 hours, meiosis resumption rates in FSH and melatonin-treated groups were similar (69.6%-81.8%, P > 0.05). At 24 hours, most oocytes were in metaphase II, with FSH showing highest rates (90.0%, P < 0.05) compared with the other groups (51.6%-69.1%, P > 0.05). In cumulus cells, MnSOD expression was higher in FSH group (P < 0.05) whereas Cu,ZnSOD transcripts were more abundant in melatonin group (10(-6)M; P < 0.05). Nuclear fragmentation in cumulus cells was highest in controls (37.4%/10,000 cells; P < 0.05) and lower in FSH and 10(-6)M melatonin (29.4% and 25.6%/10,000 cells, respectively). Reactive oxygen species levels were lower in oocytes matured with 10(-6)M melatonin than in control and FSH groups (P < 0.05). Embryo development from oocytes matured only with melatonin was similar to those matured in complete medium (P > 0.05). In conclusion, although melatonin during IVM in a defined medium does not stimulate nuclear maturation progression it does stimulate meiosis resumption and such treated oocytes support subsequent embryo development. Melatonin also shows cytoprotective effects on cumulus-oocyte complexes.
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Affiliation(s)
| | - Lígia G Mesquita
- Departamento de Nutrição e Produção Animal, Faculdade de Medicina Veterinária e Zootecnia-USP, Pirassununga-SP, Brazil
| | - Fabiana Bressan
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Maite Del Collado
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Júlio C C Balieiro
- Departamento de Nutrição e Produção Animal, Faculdade de Medicina Veterinária e Zootecnia-USP, Pirassununga-SP, Brazil
| | - Kátia R L Schwarz
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Fernanda C de Castro
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | | | | | - Lia de Alencar Coelho
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Cláudia L V Leal
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil.
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Gonçalves MC, Cesaro MP, Rodrigues MF, Lopes RF, Mezzalira JC, Mozzaquatro FD, Mezzalira A. CRIOTOLERÂNCIA DE OÓCITOS E EMBRIÕES BOVINOS MATURADOS COM LÍQUIDO FOLICULAR E/OU β-MERCAPTOETANOL. CIÊNCIA ANIMAL BRASILEIRA 2015. [DOI: 10.1590/1089-6891v16i227457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Foi avaliada a criotolerância de oócitos e embriões bovinos maturados com adição de líquido folicular (LF) e/ou β-mercaptoetanol (BM). Após vitrificação, os oócitos foram maturados em: TCM-199 (controle); BM (24h TCM-199+100µM BM); LF (6h em LF+18h TCM-199) e LF+BM (6h LF+18h TCM-199+100µM BM). Não houve diferença (p>0,05) nas taxas de blastocistos dos tratamentos TCM (6,4%), BM (4,0%) e LF (3,4%). A eclosão e densidade celular dos embriões eclodidos não diferiram (p>0,05) nos tratamentos. No Experimento 2 blastocistos expandidos (Bx) obtidos em D7 ou D8 foram vitrificados, avaliando-se sua reexpansão e eclosão. A reexpansão foi semelhante (p>0,05), sendo observado comportamento distinto na eclosão entre Bx D7 e D8. Nos Bx D7 houve maior eclosão no controle (TCM–54,2%) em relação ao BM (40,32%) e LF+BM (33,89%). Os Bx D8 apresentaram menor eclosão no controle (TCM) em relação aos Bx D7. Nos tratamentos BM, LF e LF+BM a eclosão foi semelhante para Bx D7 ou D8. A maturação com adição de LF e/ou BM não melhora a criotolerância de oócitos imaturos e embriões PIV. Blastocistos expandidos precoces (D7) são mais criotolerantes e apresentam um comportamento distinto à adição de LF e BM, em relação aos tardios (D8).
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F Hozyen H, H Ahmed H, Essawy GES, Shalaby SIA. Seasonal changes in some oxidant and antioxidant parameters during folliculogenesis in Egyptian buffalo. Anim Reprod Sci 2014; 151:131-6. [PMID: 25458317 DOI: 10.1016/j.anireprosci.2014.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 10/01/2014] [Accepted: 10/05/2014] [Indexed: 11/30/2022]
Abstract
Knowledge regarding oxidant and antioxidant status in follicular fluid remains limited and its studying in vivo should enhance our understanding of the impact of them on fertility and contribute to optimization of in vitro maturation conditions. The present study was conducted on follicular fluid and serum samples obtained from 708 buffaloes. They were examined for Malondialdehyde (MDA) as indicator of lipid peroxidation as well as superoxide dismutase (SOD) and total antioxidant capacity (TAC) as antioxidant markers. The obtained results revealed that MDA levels and SOD activity in follicular fluid decreased significantly as follicle size increased, while TAC increased significantly with the increase in follicular size. Whereas MDA level was significantly higher in summer, the TAC was significantly higher in spring. Moreover, MDA levels and SOD activities were significantly higher in the follicular fluid from different size follicles during the luteal phase than follicular phase. MDA levels in medium follicles in luteal phase and small follicles in follicular and luteal phases were significantly higher in summer than other seasons. Serum MDA levels were significantly increased in summer. In addition, MDA levels, SOD activities and TAC in serum were significantly higher during luteal phase than follicular phase in summer. TAC levels were significantly higher in follicular fluid than serum, while MDA was significantly lower in follicular fluid than serum. In conclusion, the present study revealed that oxidants/antioxidants balance may play a role in normal follicular development and oxidative stress that occur in summer could be related to reproductive seasonality in buffalo.
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Komatsu K, Iwase A, Mawatari M, Wang J, Yamashita M, Kikkawa F. Mitochondrial membrane potential in 2-cell stage embryos correlates with the success of preimplantation development. Reproduction 2014; 147:627-38. [DOI: 10.1530/rep-13-0288] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Hormonal stimulation in superovulation induces female mice to ovulate more oocytes than spontaneous ovulation. Because the superovulated oocytes contain a number of oocytes that normally regress before spontaneous ovulation or immature oocytes, the development of some embryos that derive from these oocytes by IVF is prevented. Therefore, the quality of superovulated oocytes should differ from that of spontaneously ovulated oocytes. In this study, we evaluated the quality of superovulated oocytes, by examining 1- and 2-cell stage embryos, in which the development mainly depends on the maternal mRNA, proteins, and mitochondria that are contained in the oocytes, and we then measured the mitochondrial membrane potential (ΔΨm) of the 1- and 2-cell stage,in vivo-fertilized, and IVF embryos. The ΔΨmof 1-cell stage IVF embryos was lower than that ofin vivo-fertilized embryos; however, there was no difference between IVF embryos. During the developmental process from 1- to 2-cell stage, the ΔΨmofin vivo-fertilized embryos was highly upregulated, whereas a number of IVF embryos remained unchanged. As a result, 2-cell stage embryos were divided into two groups: high- and low- ΔΨm2-cell stage IVF embryos. The development of low-ΔΨm2-cell stage IVF embryos tended to be arrested after the 2-cell stage. These results indicated that the upregulation of ΔΨmduring the 1- to 2-cell stage was important in the development of early preimplantation embryos; there were some defects in the mitochondria of superovulated oocytes, which prevented their development.
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Superoxide dismutase in polycystic ovary syndrome patients undergoing intracytoplasmic sperm injection. J Assist Reprod Genet 2014; 31:499-504. [PMID: 24526356 DOI: 10.1007/s10815-014-0190-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Accepted: 02/03/2014] [Indexed: 10/25/2022] Open
Abstract
PURPOSE Polycystic ovary syndrome (PCOS) is associated with oxidative stress (OS) and serum superoxide dismutase (SOD) activity has been reported with mixed results. The objective of this study was to examine the activity of SOD both in the serum and FF from women with PCOS undergoing ICSI, as well as the expression of Cu/Zn-SOD mRNA in the cells recovered from the FF. METHODS Forty women undergoing an ICSI trial were divided into: group I, included 20 PCOS cases, group II included 20 age-matched controls with tubal factor infertility. Both groups were similarly stimulated. A total of 204 metaphase II (MII) oocytes were aspirated; (108) from PCOS, and (96) from the control group. SOD activities in the serum and FF, as well as Cu/Zn-SOD (SOD1) mRNAs in follicular fluid (FF) cells were analyzed. RESULTS There was a statistically highly significant decrease (p < 0.001) both in the mean serum SOD (45.56 ± 18.06) and FF SOD activity (42.49 ± 11.46) in PCOS than the control group (77.38 ± 7.82), (74.37 ± 6.15) respectively. The mean relative levels of Cu, Zn SOD mRNAs was significantly lower (p < 0.001) in cells isolated from the FF in PCOS (0.36 ± 0.14) than the control group (0.81 ± 0.15). SOD activity in FF had no effects on fertilization rate (p > 0.05), or embryo quality after intracytoplasmic sperm injection (ICSI). CONCLUSION Although decreased SOD activity in FF has no effect on fertilization rate and/or embryo quality, serum SOD activity could be a clinical parameter for determining systemic oxidative stress in PCOS.
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Wrenzycki C, Stinshoff H. Maturation Environment and Impact on Subsequent Developmental Competence of Bovine Oocytes. Reprod Domest Anim 2013; 48 Suppl 1:38-43. [DOI: 10.1111/rda.12204] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C Wrenzycki
- Faculty of Veterinary Medicine; Justus-Liebig-University Giessen; Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals; Giessen; Germany
| | - H Stinshoff
- Faculty of Veterinary Medicine; Justus-Liebig-University Giessen; Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals; Giessen; Germany
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Hennet ML, Yu HY, Combelles CMH. Follicular fluid hydrogen peroxide and lipid hydroperoxide in bovine antral follicles of various size, atresia, and dominance status. J Assist Reprod Genet 2013; 30:333-40. [PMID: 23315290 DOI: 10.1007/s10815-012-9925-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 12/21/2012] [Indexed: 12/30/2022] Open
Abstract
PURPOSE To avoid inducing a state of oxidative stress (OS), assisted reproductive technologies (ART) must maintain a balance of reactive oxygen species (ROS) and antioxidants during the in vitro culture of oocytes. However, oocyte requirements and tolerance thresholds for ROS during in vivo development are still unclear. Previous studies have examined ROS levels in follicular fluid (FF) using pooled samples or according to follicle size. This study sought to examine two OS markers, lipid hydroperoxides (LPO) and hydrogen peroxide (H2O2), in FF of individually sampled follicles from bovine ovary pairs according to follicle size, atresia, and dominance status. METHODS TUNEL and cleaved Caspase-3 labeling were used to identify apoptotic granulosa cells and determine follicle atresia status. LPO were measured directly for the first time in FF. RESULTS Non-atretic follicles and dominant follicles contained more FF H2O2 than atretic follicles and corresponding subordinate follicles, respectively. FF LPO did not vary in relation to atretic status, and no difference existed between dominant and subordinate follicles. However, FF LPO was significantly lower in first subordinate follicles than in the second subordinate follicles from each ovary pair. Neither H2O2 nor LPO levels correlated with follicle size. CONCLUSIONS These data provide clear evidence that the events of antral folliculogenesis are relevant to ROS dynamics in vivo. Furthermore, such studies will help to optimize in vitro conditions for oocyte culture protocols, particularly when combined with a comparison of oocyte quality with respect to source follicle characteristics.
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Affiliation(s)
- Margo L Hennet
- Biology Department, Middlebury College, Middlebury, VT 05753, USA
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31
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A comparative study on oxidative and antioxidative markers of serum and follicular fluid in GnRH agonist and antagonist cycles. J Assist Reprod Genet 2012; 29:1175-83. [PMID: 22886458 DOI: 10.1007/s10815-012-9843-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022] Open
Abstract
OBJECTIVE To determine whether concentrations of oxidative stress markers of follicular fluid and serum are different in GnRH agonist protocol from GnRH antagonist protocol. MATERIAL AND METHOD This was a cross-sectional study. Eighty-four women undergoing controlled ovarian stimulation with either GnRH agonist (n = 39) or GnRH antagonist protocols (n = 45) for IVF/ICSI treatment were assigned by a physician. Blood was obtained at the time of oocyte retrieval, and follicular fluid (FF) from the mature follicles of each ovary was centrifuged and frozen until analysis. Malondialdehyde (MDA), nitric oxide (NO), protein carbonyl (PC), hydroxyl proline (OH-P), sodium oxide dismutase (SOD), reduced glutathione (GSH), glutathione peroxidase (GSH-Px), adenosine deaminase (ADA) and xanthine oxidase (XO) were assessed in the serum and follicular fluid of each participants. RESULTS The mean serum concentrations of GSH-Px, GSH and MDA were lower in the GnRH antagonist group compared to GnRH agonist group, but mean serum SOD was higher in the GnRH antagonist group. The mean follicular SOD, ADA and NO were higher in GnRH antagonist group than GnRH agonist group. The IVF/ICSI outcomes were similar in both groups. CONCLUSION(S) GnRH antagonist protocol is associated with increased oxidative stress. The relation of GnRH analogues with oxidative stress and its implication in follicular growth needs to be addressed in further studies.
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Somfai T, Inaba Y, Watanabe S, Geshi M, Nagai T. Follicular fluid supplementation during in vitro maturation promotes sperm penetration in bovine oocytes by enhancing cumulus expansion and increasing mitochondrial activity in oocytes. Reprod Fertil Dev 2012; 24:743-52. [DOI: 10.1071/rd11251] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Accepted: 11/25/2011] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to examine the effects of bovine follicular fluid (bFF) on mitochondrial activity in in vitro-matured (IVM) oocytes and to assess its importance for fertilisation and embryo development. Bovine follicular oocytes were subjected to IVM in medium supplemented either with polyvinylpyrrolidone, bovine serum albumin, calf serum or bFF. Nuclear maturation, cumulus expansion, mitochondrial distribution and ATP content in oocytes were compared between groups along with subsequent in vitro fertilisation (IVF) and embryo development. Compared with other supplements, bFF generated significantly enhanced re-distribution of active mitochondria in oocytes and this effect was associated with elevated intracellular ATP content. Furthermore, bFF significantly improved cumulus expansion, which was associated with improved fertilisation rates when cumulus-enclosed oocytes were subjected to IVF; however, its promoting effect was neutralised when denuded oocytes were inseminated. Elevating ATP content in oocytes by bFF did not affect maturation or embryo development but promoted fertilisation when mitochondrial electron transport was blocked in oocytes before IVF by Rotenone. In conclusion, supplementation of IVM medium with bFF promotes sperm penetration both by the improvement of cumulus expansion and by enhancing ATP levels in oocytes, which maintains their ability to be fertilised after mitochondrial stress.
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Gupta S, Choi A, Yu HY, Czerniak SM, Holick EA, Paolella LJ, Agarwal A, Combelles CMH. Fluctuations in total antioxidant capacity, catalase activity and hydrogen peroxide levels of follicular fluid during bovine folliculogenesis. Reprod Fertil Dev 2011; 23:673-80. [PMID: 21635816 DOI: 10.1071/rd10270] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2010] [Accepted: 12/22/2010] [Indexed: 12/17/2022] Open
Abstract
Follicular fluid is an important environment for oocyte development, yet current knowledge regarding its in vivo oxidant and antioxidant levels remains limited. Examining follicular fluid oxidants and antioxidants will improve understanding of their changes in vivo and contribute to optimisation of in vitro maturation conditions. The aim of the present study was to consider selected markers, namely catalase (CAT) enzyme activity, total antioxidant capacity (TAC) and hydrogen peroxide (H(2)O(2)) in follicular fluid samples (n = 503) originating from bovine antral follicles. The dynamic changes in two relevant antioxidant measures and one reactive oxygen species (ROS) were measured through stages of bovine follicular development and the oestrous cycle. CAT activity and H(2)O(2) levels decreased significantly as follicle size increased, whereas TAC increased significantly as follicle size increased. Lower TAC and higher H(2)O(2) in small follicles suggest increased ROS in the initial stages of folliculogenesis. Because CAT levels are highest in the follicular fluid of small follicles in the setting of an overall low TAC, CAT may represent a dominant antioxidant defence in the initial stages of folliculogenesis. Future studies must focus on other reactive oxygen species and their various scavenger types during antral folliculogenesis.
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Affiliation(s)
- Sajal Gupta
- Center for Reproductive Medicine, Obstetrics & Gynecology and Women's Health Institute, Glickman Urological & Kidney Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk A19.1, Cleveland, OH 44195, USA
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